Chronic pain can turn your life upside down. While there are a number of disorders that fit in this category, two of them—fibromyalgia and temporomandibular disorders (TMD)—can disrupt your quality of life to the extreme. And it may be the two conditions have more in common than similar symptoms—according to one study, three-fourths of patients diagnosed with fibromyalgia show symptoms of TMD.

To understand why this is, let’s take a closer look at these two conditions.

Fibromyalgia presents as widespread pain, aching or stiffness in the muscles and joints. Patients may also have general fatigue, sleep problems, mood swings or memory failures. TMD is a group of conditions that often result in pain and impairment of the temporomandibular joints that join the jaw with the skull. TMD can make normal activities like chewing, speaking or even yawning painful and difficult to do.

Researchers are now focusing on what may, if anything, connect these two conditions. Fibromyalgia is now believed to be an impairment of the central nervous system within the brain rather than a problem with individual nerves. One theory holds that the body has imbalances in its neurotransmitters, which interfere with the brain’s pain processing.

Researchers have also found fibromyalgia patients with TMD have an increased sensitivity overall than those without the conditions. In the end, it may be influenced by genetics as more women than men are prone to have either of the conditions.

Treating these conditions is a matter of management. Although invasive techniques like jaw surgery for TMD are possible, the results (which are permanent) have been inconclusive in their effectiveness for relieving pain. We usually recommend patients try more conservative means first to lessen pain and difficulties, including soft foods, physical therapy, stretching exercises and muscle relaxant medication. Since stress is a major factor in both conditions, learning and practicing relaxation techniques may also be beneficial.

In similar ways, these techniques plus medication or cognitive-behavioral therapy that may influence neurotransmission can also help relieve symptoms of fibromyalgia. Be sure then that you consult with both your physician and dentist caring for both these diseases for the right approach for you to help relieve the effects of these two debilitating conditions.